使用UKBF与在线参数识别的电动汽车离子电池的实时SOC估计
Selvarani Nachimuthu1, Faisal Alsaif2, Gunapriya Devarajan3
1Department of Electronics and Communication Engineering, PSNA College of Engineering and Technology, Dindigul, India.
Scientific reports
|January 11, 2025
概括
精确的电荷状态 (SOC) 估计对于电动汽车离子电池至关重要. 这项研究介绍了Thevenin 2RC模型与无气味卡尔曼口腔过器 (UKBF) 进行精确的SOC估计,其性能优于其他方法.
科学领域:
- 电气工程 电气工程
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
背景情况:
- 离子电池对于电动汽车行业至关重要,需要精确的充电状态 (SOC) 估计以获得最佳性能.
- 现有的SOC估计方法经常使用离散时间动态,限制准确性.
- 准确的电池建模对于可靠的电动汽车运行至关重要.
研究的目的:
- 为离子电池提出一个准确的电荷状态 (SOC) 估计方法.
- 解决目前SOC估计方法中离散时间动态的局限性.
- 为了提高离子电池管理系统的性能和精度.
主要方法:
- 实施Thevenin 2RC电池模型以捕捉非线性电池动态.
- 集成无气味卡尔曼布齐波器 (UKBF) 用于使用噪声电压和电流测量进行SOC估计.
- 在 MATLAB Simulink 中进行模拟,用于用扩展卡尔曼波器 (EKF) 和无气味卡尔曼波器 (UKF) 进行比较分析.
主要成果:
- 与EKF和UKF相比,无气味卡尔曼口腔过器 (UKBF) 在SOC估计中表现出更高的准确性.
- 拟议的UKBF方法实现了0.003276.6的显著低的根平均平方误差 (RMSE).
- UKBF有效地处理了Thevenin 2RC模型和测量噪声的非线性.
结论:
- 与UKBF相结合的Thevenin 2RC模型为离子电池SOC估计提供了一个高度准确的方法.
- 这种连续时间动态方法比现有的离散时间方法有了显著的改进.
- UKBF是一个强大的过器,用于精确估计电动汽车中的电池状态.
相关概念视频
Linear Approximation in Frequency Domain
85
Linear systems are characterized by two main properties: superposition and homogeneity. Superposition allows the response to multiple inputs to be the sum of the responses to each individual input. Homogeneity ensures that scaling an input by a scalar results in the response being scaled by the same scalar.
In contrast, nonlinear systems do not inherently possess these properties. However, for small deviations around an operating point, a nonlinear system can often be approximated as linear....
In contrast, nonlinear systems do not inherently possess these properties. However, for small deviations around an operating point, a nonlinear system can often be approximated as linear....
85
State Space Representation
162
The frequency-domain technique, commonly used in analyzing and designing feedback control systems, is effective for linear, time-invariant systems. However, it falls short when dealing with nonlinear, time-varying, and multiple-input multiple-output systems. The time-domain or state-space approach addresses these limitations by utilizing state variables to construct simultaneous, first-order differential equations, known as state equations, for an nth-order system.
Consider an RLC circuit, a...
Consider an RLC circuit, a...
162
Series RLC Circuit with Source
323
Consider the operation of an automobile ignition system, a crucial component responsible for generating a spark by producing high voltage from the battery. This system can be described as a simple series RLC circuit, allowing for an in-depth analysis of its complete response.
In this context, the input DC voltage serves as a forcing step function, resulting in a forced step response that mirrors the characteristics of the input. Applying Kirchhoff's voltage law to the circuit yields a...
In this context, the input DC voltage serves as a forcing step function, resulting in a forced step response that mirrors the characteristics of the input. Applying Kirchhoff's voltage law to the circuit yields a...
323
Energy Stored in Capacitors
432
A parallel plate capacitor, when connected to a battery, develops a potential difference across its plates. This potential difference is key to the operation of the capacitor, as it determines how much electrical energy the capacitor can store.
By integrating the equation that relates voltage and current in a capacitor, one can derive an equation for the voltage across the capacitor at any given time. This equation is crucial in understanding and predicting the behavior of capacitors in...
By integrating the equation that relates voltage and current in a capacitor, one can derive an equation for the voltage across the capacitor at any given time. This equation is crucial in understanding and predicting the behavior of capacitors in...
432


